Edward l



(No Model.) 7

E. L.' STILL. WOOD CLAMP. No. 471,909; Patented Mar.Z9, 1892.

. ATM/M51451 .NITED STATES ATENT QFFrCE.

EDWARD L. STILL, OF NElV YORK, N. Y.

WOOD-CLAM P.

SPECIFICATION forming part of Letters Patent No. 471,909, dated March- 29, 1892.

Application filed May 20, 1891.

T at whom it may concern.-

- act description.

My invention relates to'improvements in wood-clamps, such as are used chiefly for holding glued pieces of wood together while the glue is setting; and the objectof my invention is to produce a clamp which may be quickly adjusted to hold the pieces of wood firmly together and prevent them from Warping while the pressure is applied to them,and also to provide means for attaching legs tothe bfed of the clamp, and thus forming a horse 0 it.

To this end my invention consists in certain features of construction and combinations of parts, which will be hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar figures of reference indicate corresponding parts in all the views.

Figure 1 is a broken plan view of the clamp, showing pieces of wood held in position by it. Fig.2 is a broken vertical longitudinal section of the device. Fig. 3 is a broken vertical cross-section on the line 3 3 in Fig. 2, and Fig. 4 is a detail inverted perspective view of the tail-stock.

The clamp is provided with a bed 10, having thin flanges 11 projecting from its upper side and a heavier flange 12 at the bottom, the flanges 11 being cut away at intervals, as shown at 11, so as to facilitate the'attachment of the tail-stock, as hereinafter described, and the flange 12 being adapted to receive the recessed horse-heads 13, which are shaped to fit upon the flange and which have depending side flanges 14. A hollow wedge 15 is arranged centrally between the flanges 14 of the horseheads, and there is space enough between the wedge and the flanges for the legs 16 of the horse. A thumb-screw 17 extends upward through a vertical aperture in each wedge 15 and through a central screw-threaded aperture in each horse-head 13, so as to impinge upon the flange 12 of the bed 10, and the screw 17 carries a nut 18, which may be adjusted so that when the screw is turned home the nut semi No. 393,410. (No model.)

will strike against, the upper portion of the wedge. It will thus be seen that by tightening the screw and adjusting the nut the wedge may be held upward, so as to clamp the legs 16 between it and the flanges 14 of the horsehead, and the horse-head will also be secured to the bed 10.

A head-stock 19, which is recessed in the center, as best shown in Fig. 2, is held to slide in the upper flanges ll of the bed, and is moved by a hand-screw 20, which is mounted horizontally and longitudinally on the bed, being held to turn in suitable supports 21. The hand- I screw is held in a socket of the head-stock, so

that when the hand-screw is turned it will move the head-stock backward and forward, according to the direction in which it is turned. The head-stock 19 carries a vertical screw 22, which is slotted longitudinally, as shown at 23, and which is provided with a nut 24, the nut having a scalloped flange, so that it may be easily operated by the fingers.

A tail-stock 25 is adapted to be fixed upon the bed opposite the head-stock 19, and the tail-stock has a central threaded perforation 26, so that a screw 22, similar to that already described, may be secured in it. The tailstock is also provided with depending flanges 27, which are adapted to embrace the flanges 11 of the bed 10, and on the inner sides of these flanges 27, near the ends,are L-shaped lugs 27 which are adapted to drop through the cutaway portions 11 of the flanges l1, and when the tail-stock is placed upon the bed with the lugs projecting through the parts 11 the tailstock'may be moved backward slightly upon the bed, and the horizontal portions of the lugs will interlock with the flanges 11 and thus hold the tail-stock securely in place.

The vertical slots 23 in the screws 22 are to accommodate a binding-strip 29, which is intended to hold the pieces 30, which have been glued, the tail-stock being apertured at 28 for the passage of the strip 29.

To operate the clamp, the tailrstock is adj usted upon the bed in the manner described, the pieces 30, which have been previously glued, are placed upon the bed between the head-stock and the tail-stock, the bindingstrip 29 is placed in the slots 23 of the screws 22, so that it will rest upon the pieces 30, the nuts 24 are turueddown so as to strike the binding-strip, and the hand-screw 20 is turned up tightly, thus forcing the head-stock firmly against the pieces 30 and crowding them closely together. The natural tendency of the glued pieces when pressed in this manner is to warp and double up in the center; but it will be observed that the binding-strip 29 rests firmly upon them, so that the pieces cannot get out of place, and as a result they will be nicely united.

I have shown the bed secured in horse-heads and mounted upon legs, thus forming a horse;

vertical screw having a longitudinal slot and a nut, of the longitudin ally extending screw mounted 011 the bed with its inner end engag ing the head-stock to operate the same, substantially as shown and described.

2- The wood -clamp comprising a bed, atai'lstock secured thereon, a head-stock held to slide upon the bed, vertically-slotted screws mounted in the headstock and tail-stock, a binding-strip mounted in the slots of the screws, and nuts for the-screws, substantially as described.

3. The combination, with a bed provided along its sides with flanges having cut-away portions, as shown, of atail-stock adapted to be secured upon the bed, said tail-stock having L-shapcd lugs 27 projecting downward from. itslower side, the horizontal rearward cut away, as shown at 11,of atail-stock having depending flanges 27 to embrace the bedflanges, and L-shaped lugs 27 alongside the inner faces of the flanges 27 with their horizontal portions projecting rearward to enter the cut-away portion 11 and engage the flanges of the bed, substantially as described.

5. The combination, with aflanged bed carrying clamping mechanism,as shown, of horseheads secured to slideonthe bedflanges, said horse-heads having depending side flanges, wedges held between the flanges of the horseheads, a screw extending vertically through the wedges and heads, and removable legs held between the wedges and the flanges of the heads, substantially as described.

6. The combination, with the bed provided with leg-supporting heads, each having side flanges, of a wedge between. said flanges, Legreceiving spacesbeing formed between the adjacent sides of the wedge and flanges, and anoperating-screw for the wedge,,substantially as shown and described.

7. The combination, with the head 13,.re-

"cessed on its upper end, provided with depending side flanges 14.- 14, and acentral screwthreaded aperture, of avertically-apertured i wedge 15 between the said flanges and of less width than the space therebetween, a screw extending up through the wedge into the screw-threaded aperture, and a nut on the screw bearing against the lower face of the wedge, substantially as shown and described.

- EDWARD 'L. STILL.

itnesses:

WARREN B. Huronmson, EDGAR TATE. 

